Calcium Tungstate Types
Calcium tungstate is white powder with tetragonal structure. Its relative density is 6.062. Slightly soluble in water and ammonium chloride solution. Dissociation in hydrochloric. Calcium tungstate is a very important chemical materials, mainly used for production of ammonium paratungstate, tungsten trioxide, tungsten iron, steel, carbide, tungsten materials, tungsten and tungsten alloys and other tungsten products.
There are several types of calcium tungstate, powder,scheet,grainy.
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Calcium tungstate is a self activated phosphor. It is an effective luminescent material under the excitation of X ray, electron beam and ultraviolet.
Tungsten trioxide exists in the form of hydrate in nature, including mineral forms: wolfram (WO3? H2O), water tungsten oxide (WO3.2H2O) and water tungsten oxide.
Tungsten carbide powder (WC) is the main raw material for producing cemented carbide, chemical formula WC. Tungsten carbide powder is a black six square crystal with metallic luster and hardness similar to diamond. It is a good conductor of electricity and heat.
Tungsten is a parent stone element, mainly in the form of wolframite in pegmatite and hydrothermal deposits; there are about 15 known tungsten ores, of which there are mainly two wolframite and scheelite.